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      01-17-2013, 08:47 AM   #8
phil200tdi
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Drives: 335i M Sport E90 LCI manual
Join Date: Jan 2011
Location: Aylesbury

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All depends on how aggressive you want to be.

14.5psi (map2) 400bhp ish
17psi (Map5) 420-430bhp ish

With a G5 ISO board you could get higher boost but start to risk Knock without Meth. Depends on Octane and environmental conditions too.
__________________
Car: 2010 Jaguar XFR (Stock - For now)
Gone but not forgotten: Highly Modified E90 335i LCI M Sport Manual (circa 480BHP/500lb ft)